Set the view's tintAdjustmentMode when disabled rather than computing a custom dimmed tint color

Author: daprice

TactileSlider/Classes/TactileSlider.swift

@@ -173,6 +173,7 @@ import UIKit
 	override open var isEnabled: Bool {
 		didSet {
 			renderer.grayedOut = !isEnabled
+			tintAdjustmentMode = isEnabled ? .automatic : .dimmed
 		}
 	}
 

TactileSlider/Classes/TactileSliderLayerRenderer.swift

@@ -19,23 +19,10 @@ internal class TactileSliderLayerRenderer {
 
 	var thumbTint: UIColor = .white {
 		didSet {
-			thumbLayer.fillColor = grayedOut ? disabledThumbTint.cgColor : thumbTint.cgColor
+			thumbLayer.fillColor = thumbTint.cgColor
 		}
 	}
 
-	private var disabledThumbTint: UIColor {
-		// get HSV from normal tint color
-		var tintHue: CGFloat = 0
-		var tintSaturation: CGFloat = 0
-		var tintBrightness: CGFloat = 0
-		var tintAlpha: CGFloat = 0
-		guard thumbTint.getHue(&tintHue, saturation: &tintSaturation, brightness: &tintBrightness, alpha: &tintAlpha) else {
-			return UIColor.gray
-		}
-		
-		return UIColor(hue: tintHue, saturation: tintSaturation/10, brightness: tintBrightness*0.8, alpha: tintAlpha*0.6)
-	}
-	
 	var cornerRadius: CGFloat = 10 {
 		didSet {
 			updateMaskLayerPath()
@@ -92,8 +79,6 @@ internal class TactileSliderLayerRenderer {
 	private func updateGrayedOut() {
 		let alpha: Float = grayedOut ? 0.6 : 1
 		trackLayer.opacity = alpha
-		
-		thumbLayer.fillColor = grayedOut ? disabledThumbTint.cgColor : thumbTint.cgColor
 	}
 
 	private func updatePopUp() {